As a Security Guard, you will need to master following:

• ensure public safety and security
• execute inspection walkway
• maintain facility security systems

More generally, a security guard is also versed in:

• check official documents
• comply with the principles of self-defence
• deal with aggressive behaviour
• detain offenders
• ensure law application
• identify security threats
• identify terrorism threats
• liaise with security authorities
• monitor surveillance equipment
• patrol areas
• perform body searches
• perform security checks
• practice vigilance
• restrain individuals
• security threats
• stay alert

It also helps to know the following:

• alarm systems
• carry out security activities with a dog
• conduct airport security screening
• document security incidents in the store
• ensure hotel security
• ensure security on ships
• ensure store security
• exercise security in hospitals
• explosives
• legal requirements related to ammunition
• manage lost and found articles
• monitor parking areas to maintain security
• provide security in detention centres
• screen luggage in aerodromes
• security in commercial buildings
• security in industrial buildings
• check methods
• control crowd
• criminal law
• ensure compliance with types of weapons
• fire safety regulations
• handle surveillance equipment
• illegal substances
• inspect cargo
• interrogate individuals
• legal use-of-force
• manage major incidents
• operate radio equipment
• provide door security
• provide first aid
• regulate traffic
• surveillance methods